scott



C. H. SCOTT. DECD. w. sc'bTT, w. scon, AND 1. E. WESTLE, EXECUTORS.

MACHINE FOR PRINTING LINOLEUM, FLOOR CLOTH, AND THE LIKE.

l APPElCATiON FILED MAR. 9. 191a. Patented NOV. 1919.

3 SHEETS-SHEET I.

\ C. H. SCOTT. DECD.

w. SCOTT, w. SCOTT, AND 1. E. wssns, sxscurons.

MACHINE FOR PRINTING LINOLEUM, F LO0R cum, AND THE LIKE. v APPLICATION FILED MAR. 9, 191 8- ,1',323,107, Patented Nov. 25, 1919.

3 SHEETS-SHEET 2.

M an

c. H. scoTr. DECD.

VI. SCOTT, W- SCOTT. AND 1. E- WESTLE, EXECUTORS. MACHINE FOR PRINTING LINOLEUM, FLOOR CLOTH, AND THE LIKE.

A'PPLICATION FILED MAR. 9, l9I8-' NOV-25 h 3 SHEETS-SHEET 3.

UNITED STATES PATENT orriou.

CHARLES HERBERT SCOTT, F GLOUCESTER, ENGLAND; WALTER SCOTT, 0F MANCHES- TER, ENGLAND, WALTER SCOTT, OF SHIPLEY, ENGLAND, AND JOHN EDWARD WESTLE, OF GLOUCESTER, ENGLAND, EXECUTORS 0F SAID CHARLES HERBERT SCOTT, DECEASED.

MACHINE FOR PRINTING LINOLEUM, FLOOR-CLOTH, AND THE LIKE. I

Specification of Letters Patent. Patented NOV. 25, 19 19.

Application filed March 9, 1918. Serial No. 221,485.

To all whom it may concern I Be it known that I, CHARLES HERBERT SCOTT, a subject of the King of Great Britain, residing in Gloucester, England, have 5 invented certain new and useful Improvements in B/Iachines for Printing Linoleum,

Floor-Cloth, and the like, of which the folcolors are arranged in sequence above the bed or table and spaced at suitable distances apart, preferably at two or three times the length of the repeat of the pattern to be printed, each printing block being fitted to a transverse beam which is given an up and down motion from suitable mechanism, and the colors applied to the blocks by suitable devices which may be of known character and comprise each a tiering roller mounted in a color or tiering boX and which are traversed underneath the blocks and deposit color upon their surfaces at the time when the printing mechanism is at rest.

The main motions of such a block printing machine are three (a) The movement up printing blocks; I

(b) The movement backward and forward of the tieringor coloring rolls or other tiering devices; and

(0) The movement for feeding forward the material which occurs about the same time as the movement of the tiering devices.

Up to the present, ithas been customary to drive such machines from a rotary shaft by transferring the rotary movements into rectilinear movements through mechanism such as cams or similar devices and as it is difficult to construct such mechanism to operate smoothly and without erks, the speed at which such machines can be run has been limited. One reason for this. limitation is and down of thewhich the printing blocks for the different that beyond a certain limit there is a danger of the coloring materlal being thrown about and so spoiling the fabric being printed.

Such mechanism is also complicated and ex pensive. r r V The present invention consistsin improve: ments designed to simplify and cheapen the construction of the above type of machines and generallyto improve their working.

A main object of the improvements is to provide driving means which shall operate smoothly and without jerks and permit of a machine of the above type being operated at a higher speed than heretofore and thus gave a greater output of printed material.

One of the improvements consists in employing, a fluid pressure driving mechanism to operate the various movements of the ma- 7 chine. Other improvements comprise certain modifications of the construction of parts of the improved machine as 'willbe hereinafter described.

In carrying out the invention I employ one or more hydraulic cylinders which are adapted to act upon the reciprocating parts of the machine to produce the necessary,

movements thereof. I, preferably, employ two such cylinders or sets of cylinders adapted to' operate alternately, one to actuate the printing blocks and the other toactuate the tiering devices and to feed forward the ma-' terial. It is obvious that to prevent collision between the printing blocks and the tiering devices, these must not both be moved at the same time, and for this purpose I use a valve system which will prevent one cylinder coming into operation until the other has completed, or nearly completed, its traverse. I may, for lnstance, operate the valve of-one cylinder by the movement of the piston in the other cylinder in the manner known in connection with duplex umps. v r 1 r y I will furtherdescribe my invention with reference to the accompanying drawings, in which y Figure 1 is a diagrammatic side view showin some Darts of a machine construct ed according to this invention, the printing blocks being shown in the elevated'position or the position of rest. 7

Fig. 2 is a side elevation to an enlarged scale of a vportion of the machine which is p shown diagrammatically in Fig. 1, three printing blocks, three tiering devices and a part of the mechanism for feeding the material intermittently being included.

3 is cross section of the machine, parts being omitted.

Fig. 4 is a side View of a. pair of fluid pressure cylinders shown in 1 and 3 and their valve-controllin gear.

Fig. 5 is a plan illustrating valve controlling gear and one arrangement of a differential motion for controlling the valves of two fluid pressure cylinders corresponding to those shown in Figs. 1 and 3.

big. 6 18 a cross section on line 66 in Fig. 5.

Figs. 7 and 8 are two views illustrating a throttle valve-controlling device.

Fig. 9 is a fragmentary plan view showlIlg a portion of the piston cylinder depicted in Fig. 5 having applied to it the controlling device illustrated in Figs. 7 and 8.

In the several figures the corresponding parts are indicated by the same letters.

The linoleum printing machine frame, printing blocks and color boxes may be of any suitable construction, but the following is a description of a convenient arrangement thereof.

The side framing the machine consists of a bottom member A and top member 13. Figs. 2 and 3. the latter member having faeings on the bottom and sides for carrying sliding bars C and vertical slides D forming part of the printing motion and facings on the top to carry the racks E forming part of the mechanism for revolving the tiering roller W. Brackets are fixed at intervals to the inside of the members B to carry guides H for the bands F for forwarding the material I and also plates J for carrying the impression pad K. The bottom members A may be of angle section and be suitably connected as for instance by cross lattice girders L. Some of the cross members L may be fitted with pedestals M for holdin the shafts N of the wheels 0 on.

which the machine can be traversed.

At each end of the side frames are fitted bearings for carrying the shafts P of the drums for forwarding the material, of which drums one only is shown in Fig. 2.

The printing blocks R are mounted by means of suitable traverses to two cross members R, which are joined together at each end by castings or members 3 which form the trunnions by means of which the blocks R can be turned over when desires.

The vertical slides D may be constructed of cast iron or other suitable substance with bearing D at the top to carry the trunnions R They work on gold rackets fixed to the top and bottom in It. and B. The slides are united at by a shaft T that is furnished with two bottom end fry i 1 so it be revolved half a circle, the throw of the eccentrics being such as to raise the bloclr suiliciently to put it out of action. The printing block R at the right hand end of Fig. 2 is shown in such out of action position.

The printin motion may, as shown, con sist of the flat horizontal slide bars C. on each side of the machine. Each pair of these bars is fitted with cast iron crossheads C, one for each printing block bolted between the bars and working in guideways on the lower face the top member B. The crossheads are furnished each with a joint C for the upper end of a toggle rod U, the lower end of the rod being on the eccentric T of the corresponding cross shaft T as before mentioned. These bars C when operated as described below travel backward and The tiering devices comprise a color box JV and a roller if for applying color to the printing block. mounted therein. There are as many of these devices there are printing blocks. The ends of the boxes are mounted on angle bars W extending the whole lenojta of the machine and adapted to run on rollers N mounted on the members The angle bars W are each fitted with ieces or brackets W projecting below the table of the TL. nc. arranged so that they go down between the top member of the membe and the band guides H, the kaclrets G that carry the band guides being raged so as to allow room for he travel the color boxes. The lower end of brackets N are secured by means of a cross head Y to the piston rod Y of a fluid pressure or hydraulic i lston cylinder Y placed on the centerline of the machine and employed for reciprocating the tiering devices. A similar cylinder U is placed below piston cylinder Y. the piston rod Z of which is secured to the bars C for driving the printn'iotion by a cross-head Z '7 In Fig. 1 and also in and the bars C and to do rods U are shown in the positions they have initially or prior to the printing operation. As the piston of cylinder Z moves outwardly so that the bars make a forward stroke in the direction of the arrow X in Fig. 1, each rod U will turn about its pivotal connections until it assumes a position on the other or left side of slide D and inclined to the slide at an angle equal to that which the rod makes with the slide when in the initial or right hand position. These movements of rods D cause the respec tive printing blocks R first to move dow. and then up during the said forward stroke.

Blocksll will make corresponding move ments while bars C make the return or rearwardstroke. The tiering'devices prior to a printing operation occupy positions'between the printing blocks B. Other suitable mechanism for operating the printing blocks and tiering devices from the cylinders may be alternatively employed.

Fig. a shows one way in which the movement of the piston of one of the cylinders Y, Z may be arranged to control the valve sys tem of the other cylinder. Respectively associated with cylinders Y and Z are valve boxes 3 and z and valve rods 3 z, the latter being provided with extension or connecting rods 31 ,2 It will be seen from Fig. i that an arm a: fixed to piston rod Y of cylinder Y will in its reciprocating niove ments engage alternately with stops 5 and Z2 secured to the knock or tappet. rod 2 of cylinder Z, there-y reciprocating the valve rod 2 and controlling the valve system oi cylinder Z. The arm a may be car ried by or be a part of the framed crossheac X referred to above. An arm 0 on piston rod Z of cylinder Z is adapted, as the piston rod moves to and fro to engage alternately stops (Z and cl on a knock or tappet rod (2 which is mounted to slide in suitable bearings (not shown) and is at one extremity pivota-lly connectedto one end of a lever f which is suitably pivoted at 7" between its ends and at its other end pivs otally connected byineans of-the rodyto the valve rod y. It is clear that the valve rod will'by the action of the parts (Z, cl,

and 9 be reciprocated as the piston rod Z.

moves to and fro, the valve system in valve box 1 being accordingly controlled.

To regulate the speed during the strokes of the pistons I prefer to fit the cylinders with differential motions which may be of any suitable known kind and by means of which each cylinder gradually closes its own valve as it moves,'thea1nount of such closure being adjustable at will. 1 7

Each of such motions or' gears would be operatively connected with the piston rod cross head of a cylinder and also with the valve rod of the valve in the valve box associated with that cylinder, so that as the piston rod moves and approaches the end of a stroke the difi'erential gear will operate in a manner to cause thesaid valve to move shown in Figs. 0

gradually toward one or other of its closed f cylinder controls the valve system of another or second cylinder and wherein. is included a differential gear that is connected both with the valve system and with thepiston cross-head of the said second cylinders In these figures the valve boxes y and 2. attached respectively to the cylinders Y and Z,- are shown arranged one on one side of the cylinders'and the other on the oppositeside. The means whereby the valve rod .y is operated by the'inovements of the piston rod of cylinder Z comprise a knock rod g carrying yielding or spring stops gt, g and adapted to be. operated by a part carried by the cross head Z of the lower orprin-ting cylinder Z. The rod g in its movements actuates the valve in valve box 11 by means or its connection to one end of a lever '72 pivotally connected between its ends to valve rod 3 The lever h is also operatively connected with the differential gear comprising the parts mentioned below.- For this purpose the lever h at its other end is pivotally connected to one, end of a rod cl 7.

that forms part of the difi'erential gear and is at its other extremity attached to 'a sleeve or ba adjustably mounted'on radius rod is that is adapted to be turned about a fixed pivotZ during the reciprocating. movements of the cross head X by ,means of the rod m attached to'that cross head; The said parts 2', his, Z, and m constitute the said difierentlal gear. 1

It. the point of attachment of rod?) to' sleeve j coincides with the pivot Z, the valve in valve box y will be controlledentirely by the knock rod If, however, the point of. attachment is moved away from pivot Z to,

say, a position as shown in Fig. 5, then the parts i, 70 and m will take partin regulating the movements of the valve.

A similar differential gear may be used in COIIJUHCHOH withthe cross head Z andthe valve rod in valve box 2. Such-gear is not and 6. in orderto avoid confusion therein.

Vith the object of obtaining a good inrpression from the printing blocks I may arrange a throttle valve on either the admission or exhaustpipe of the cylinder Y working the printingmovement, such throttle being operated so as to'prodnce a dwell in the movement while the printing blocks are in contact with the material'l. Anysuitable means may be provid d tor automatically operating the throttle valve. A O11V611l81lt arrangement is shownin "Figs. 7,. 8,-"a11d 9, whlch as shown comprlsesa suitably shaped cam 1 which can be adjusted by means of a handle 2 lengthwise of a lever 3 that is pivotally mounted. at 3 on a fixed part of the machine and is operatively connected with the throttle lever l. The lever and cam are arranged transversely of the path traversed by a roller 5 carried by a bar 6 that is arranged to move in unison with the piston of the printing cylinder, and for that purpose is connected by means of the members 7 and 8 to the tail rod Y attached to that portion. The eX- tent to which the throttle valve is closed will. depend upon the position of the adjustable cam 1 on the leverr3.

In a machine as above referred to it is manifest that the material being printed requires to be moved forward at the same time as the tiering or coloring devices move forward, and again requires to be moved forward when the coloring devices move backward. To attain this object in the simplest way, although any convenient method may be employed according to circumstances, I prefer to fit, as shown in Figs. 1, 2 and 3 a rack s on to a tail rod attached to the piston in the tiering cylinder Y so as to drive a spur wheel 25 of a circumference equal to the travel of the rack so that it makes a complete revolution in one direction or the other as the tiering m chanism moves. This wheel would be mounted on a shaft having a crank it thereon, and this crank would give motion to a shaft carrying the forwarding drums which pull forward the endless bands F carrying the material I to be printed by means of a pawl o and ratchet o. it will be seen that each motion in either direction of the tiering mechanism will give a complete rotation to the crank and, therefore, a complete stroke backward and forward of the crank lever, and that although the crank revolves in a difl'erent direction during the forward and backward stroke of the tiering mechanism the resultant movement of the pawl lever is the same.

Having now fully described the nature of my said invention and the best means I know of carrying the same into practical efl'ect, I claim 1. In a machine for printing floorcloth, inoleum and the l ke material as herein described, the combination with a plurality of printing blocks and a corresponding number of tiering devices, of means for raising and lowering the printing blocks, said means comprising a fluid pressure cylinder including a piston rod and actuating mechanism connecting the piston rod and the printing blocks, and of means for traversing the tiering devices, said latter means comprising a second fluid pressure cylinder including a piston rod and motion trans mitting connections between the tiering de vices and the piston rod of the said second cylinder.

2. In a machine for printing floorcloth, linoleum and the like material as herein described, the combination with a plurality of printing blocks and a corresponding number of tiering devices, of means for raising and lowering the printing blocks, said means comprising a fluid pressure cylinder including a piston rod and actuating mechanism connecting the piston rod and the printing blocks, of means for traversing the tiering devices, said latter means comprising a second fluid pressure cylinder including a piston rod and motion transmitting connections between the tiering devices and the piston rod of the said second cylinder, and means operated by the fluid pressure cylinder that actuates the tiering devices and adapted to forward the material being printed both when the tiering devices move forward and when they move back.

3. In a machine for printing floorcloth, linoleum and the like material as herein described, the combination with a plurality of printing blocks and a corresponding number of tiering devices, of means for raising and lowering the printing blocks, said means comprising a fluid pressure cylinder including a piston rod and actuating mechanism connecting the piston rod and the printing blocks, of means for traversing the tiering devices, said latter means comprising a second fluid pressure cylinder including a piston rod and motion transmitting connections between the tiering devices and the piston rod of the said second cylinder, means operated by the fluid pressure cylinder that actuates the tiering devices and adapted to forward the material being printed both when the tiering devices move forward and when they move back, said latter means comprising a traveling rack carried by the piston rod of the said second cylinder, a rotatably mounted spindle provided with a crank, a spur wheel fixed to said shaft, the wheel meshing with the rack and having a circumference equal in length to the travel of the rack, a pair of rotatably mounted shafts each carrying a drum, an endless band cotiperating with the drums and adapted to support the material to be printed, pawl and ratchet mechanism operatively connecting the crank and one of the rotatably mounted drums.

i. In a machine for printing floorcloth, linoleum and the like, the combination. of a series of separately functioning devices, a like series of movement transmitting mechanisms operatively connected each with one of said devices, a corresponding number of successively operating fluid pressure cylinders including piston rods, each adapted to actuate one of said mechanisms, a valve on each cylinder and control gear therefor,

means operable by the piston rod of the cylinder in the series operating first and adapted during a stroke of the sald piston rod to impart motion to the valve control gear of the cylinder in the series operating second, and means operable by the piston rod of the said last mentioned cylinder and adapted during a stroke of the latter piston rod to impart motion to the valve control gear of the cylinder in the series next in order to operate, and so on in successlon.

5. In a machine for printing floorcloth, linoleum and the like material as herein described, the combination with a plurallty of printing blocks and a correspondlng number of tiering devices, of means for raising and lowering the printing blocks, said means comprising a fluid pressure cylinder including a piston rod and actuating mechanism connecting the piston rod and the printing blocks, of means for traversing the tiering devices, said latter means comprising a second fluid pressure cylinder in cluding a piston rod and motion transmitting connections between the tiering devices and the piston rod of the said second cylinder, means operated by the fluid pressure cylinder that actuates the tiering devices and adapted to forward the material being printed both when the tiering devices move forward and when they move back and means for regulating the speed of the piston in any cylinder in theseries, said means comprising a differential gear arranged in operative relation with the valve control gear of the respective cylinders and operable by the movement of the piston rod thereof.

6. In a machine for printing fioorcloth, linoleum and the like material as herein described, the combination with a plurality of printing blocks and a corresponding number of tiering devices, of means for raising and lowering the printing blocks, said means comprising a fluid pressure cylinder including a piston rod and actuating mechanism connecting the piston rod and the printing blocks, of means for traversing the tieringdevices, said latter means comprising a second fluid pressure cylinder including a piston rod and motion transmitting connections between the tiering devices and the piston rod of the said second cylinder, means operated by the fluid pressure cylinder that actuates the tiering devices and adapted to forward the material being printed both when the tiering devices move forward and when they move back and means for regulating the speed of the pisbox, of means for operating the printing blocks, said means comprising on each side of the machine a horizontally reciprocating bar, a plurality of vertically moving slides, a corresponding number of toggle rods each pivotally connected at its end to a slide and to one of the said bars, a fluid pressure cylinder including a piston rod and a cross head connecting the cylinder piston rod and the said bars, and of means for traversing the tiering devices, said means comprising on each side of the machine a reciprocating member attached to the color boX, a second fluid pressure cylinder including a piston rod and a second cross head connect ing the piston rod of the latter cylinder and the said reciprocating members.

8. In a machine for printing floorcloth, linoleum and the like material as herein described, the combination with a plurality of printing blocks and a corresponding number of tiering devices each including a color box, of means for operating the printing blocks, said means comprising on each side of the machine a horizontally reciprocating bar, a plurality of vertically moving slides, a corresponding number of toggle rods each pivotally connected at its end to a slide and to one of the said bars, a fluid pressure cylinder including a piston rod and a cross head connecting the cylinder piston rod and the said bars, whereby the vertically moving slides and printing blocks each make a down stroke and an up stroke for each stroke of the reciprocating bars, and means operating to cause a printing block to dwell momentarily in its movement on reaching the limit of its down stroke, said means comprising an adjustable throttle valve to control the passage of the cylinder motion fluid.

In testimony whereof I have signed my name to this specification in the presence of two' subscribing witnesses.

CHARLES HERBERT SCOTT.

Witnesses:

WM. A. SCOTT, R. STANLEY SUNTER, 

